The deal rewrites the many of the rules governing free trade across the three countries and caps off a bitter trade dispute between Trump and his closest neighbors.

"We worked hard on this agreement," Trump said during a signing ceremony at the Group of 20 (G-20) summit in Buenos Aires, Argentina. "It's been long and hard. We've taken a lot of barbs and a little abuse and we got there. It's great for all of our countries." The Hill's Jordan Fabian and John Bowden tell us more about the pact here.

What's new:

The new agreement requires that 75 percent of an automobile's content be manufactured in North America in order for a motor vehicle to receive duty-free treatment, up from 62.5 percent, and says that workers manufacturing them must earn a $16 minimum wage, a provision designed to move more production to the U.S. and Canada.

It also contains a new investor-dispute settlement mechanism and new digital trade provisions, subjects where U.S. officials said the 1994 NAFTA agreement was lacking.

What's next:

The legislatures of all three countries still need to approve the deal, a process that will take most of 2019. Trump played down the chance of Congress rejecting the pact, but there's been ample bipartisan criticism to put the future of the deal in jeopardy.

Lingering threats: Even though the U.S., Canada and Mexico have struck a tentative deal on trilateral trade, Trump's tariffs on steel and aluminum are still causing issues among the three nations.

Ocasio-Cortez told Hill.TV in an interview Thursday that she's "looking at" serving on the House Financial Services Committee, which leads congressional regulation and supervision of U.S. banks, lenders, insurers and housing industry.

"I think with our district, we can be ambitious, so we're kind of swinging for the fences on committees," Ocasio-Cortez said. "We might as well ask for something big." Here's more from me.

The background:The Financial Services panel is one of the most sought-after House committees. Its members wield significant influence over Washington's relationship with Wall Street, and the panel offers access to millions of dollars in financial sector campaign donations.

While New Yorkers like Ocasio-Cortez often join the Financial Services panel, few freshmen land spots on the coveted committee. The incoming freshman is also seeking to join the Energy and Commerce Committee, another prominent panel often out of reach for new members.